Leeenux is an Ubuntu-based commercial Linux distribution tailored to netbooks. Several editions, depending on the user interface are available; these include Unity 2D, MATE and LXDE desktop environments.

The Q4OS team have published a new development snapshot of their Debian-based distribution. The new version, Q4OS 3.6 Testing, is available in KDE Plasma and Trinity desktop flavours which uses Debian "Buster" as its base. The release announcement reads: "An updated image of the Q4OS 3 Centaurus testing live media is available for download https://www.q4os.org/downloads2.html , now in version "3.6". It now features the most recent Trinity stable release 14.0.6. Apart from that, a few fixes and security patches has been included.... Q4OS Centaurus 3.6 is based on the current Debian 'Buster' development, Plasma 5.14, and Trinity desktop 14.0.6 stable branches. All the updates are immediately available for existing Q4OS Centaurus users from the regular Q4OS repositories. Keep in mind we don't recommend to use testing versions in production environments." Download (MD5) (pkglist): q4os-3.6-x64.r1.iso (916MB), q4os-3.6-x64-tde.r1.iso (678MB).

Q4OS is a Debian-based desktop Linux distribution designed to offer classic-style user interface (Trinity) and simple accessories, and to serve stable APIs for complex third-party applications, such as Google Chrome, VirtualBox and development tools. The system is also very useful for virtual cloud environments due to its very low hardware requirements.

Q4OS is a lightweight Linux distribution based on Debian. The distribution's latest release is Q4OS 3.8 which is available in two desktop editions: KDE Plasma and Trinity. "Q4OS Centaurus is based on Debian Buster 10 and Plasma 5.14, optionally Trinity 14.0.6, desktop environment, and it's available for 64-bit and 32-bit/i686 PAE computers, as well as for older i386 systems without PAE extension. We are working hard to bring it for ARM devices too. One of the Q4OS specific goals is the ability to have Plasma and Trinity desktop alongside each other installed. Users can switch back and forth between more advanced Plasma or efficient Trinity desktop. Both desktops can independently coexist side by side and don't interfere with each other. Plasma is being the logical primary choice for most of users, so it's considered to be the default option, which is also obvious from the Q4OS downloads site. Q4OS 3.8 will receive five years of security updates. Further details can be found in the project's release announcement. Download (MD5) (pkglist): q4os-3.8-x64.r1.iso (869MB), q4os-3.8-x64-tde.r1.iso (638MB).

Q4OS is a Debian-based distribution which runs either the Trinity or KDE Plasma desktop environments. The project has published a new development snapshot, Q4OS 3.7 which is available in both 32-bit and 64-bit builds. "We are entering the final phase of the Q4OS 3 Centaurus development, so it's now officially frozen. On this occasion we have released a brand new 32-bit Q4OS 'Centaurus' installation media designed for older computers, as well as 64-bit media cumulative update. Users can now easily deploy the Q4OS 3.7 testing release, if they want to become early adopters or just help with the testing. Please download 64-bit, as well as 32-bit ISO images on the dedicated Testing releases webpage. The Freeze phase is now in effect for Q4OS 3 'Centaurus', which means that no new features, nor significant changes are permitted, exception being only critical bugs and anything else, that might block the final release." Q4OS 3.x should transition to being a stable release around the same time Debian 10 is published in the first half of July. After that, Q4OS 3.x will receive five years of support. Details can be found on the distribution's news page. Download (MD5, pkglist): q4os-3.7-x64.r1.iso (869MB), q4os-3.7-x64-tde.r1.iso (638MB).

Q4OS is a Debian-based desktop distribution featuring the Trinity desktop, a lightweight environment forked from KDE 3. The project's latest stable release is Q4OS 2.7 which improves scaling for high resolution screens. The release announcement states: "A significant update to the Q4OS 2 Scorpion stable LTS is immediately available for download. The new 2.7 series brings some important improvements for the Trinity desktop. An essential change is much improved scaling ability for hi-dpi screens, making this operating system better adapted for modern computers. Desktop profiler, Software centre, Welcome screen, Setup utility, and other Q4OS specific tools have been updated to be rendered correctly for higher screen resolutions. Apart from the scaling capabilities, Q4OS 2.7 brings numerous improvements and fixes, for example better GTK3 themes integration, fixes to XDG standard implementation and others. Current users only need to perform regular update of their systems to activate scaling capabilities, however we recommend for new users to download and make a fresh Q4OS 2.7 installation. Other changes include Q4OS installer improvements, Firefox 64 and LibreOffice 6.1.3 installers, important security and bug fixes as well as cumulative upgrade covering all changes since the previous Q4OS 2 Scorpion stable release." Download (MD5): q4os-2.7-x64.r1.iso (574MB, pkglist).

The Q4OS team has published a new development snapshot of the distribution's Testing branch, code name Centaurus. The new release is based on Debian Testing and features the Trinity desktop environment and the Calamares system installer. The release announcement states: "This release brings quite significant changes and improvements, the most important one is that Q4OS switched to the Calamares installer. That offers nice new installation features, for example fully encrypt target system, easy disk drive partitioning and many others. Another important change is move to the new Trinity 14.0.6 development version. All dependencies from the current stable Q4OS Scorpion has been removed, so the Centaurus now becomes fully independent getting its own repositories and dependencies. Secure Boot support has been improved too. The Calamares installer detects, if Secure Boot is active and adjusts the target system accordingly. If Secure Boot is switched off in the firmware, no Secure Boot stuff is installed. Q4OS Centaurus 3.4 is based on the current Debian 'Buster' and Trinity desktop 14.0.6 development branches. Q4OS Centaurus will be in development until Debian Buster becomes stable, and will be supported at least five years from the official release date." Download (MD5): q4os-3.4-x64.r2.iso (664MB, pkglist).

Q4OS 2.6 has been released. Q4OS is Debian-based Linux distribution which ships with the Trinity desktop (a continuation of the KDE 3 desktop environment) or KDE Plasma 5.8.6 (a version found in Debian 9). This version is a routine update that brings the latest Trinity, version 14.0.5: "An update to the Q4OS 2 'Scorpion' stable LTS is available for download. The new 2.6 release is based on and upgrades to the latest stable versions of the Trinity 14.0.5 desktop and Debian 9.5 'Stretch' projects. Q4OS-specific fixes and patches are revised and provided as well. All the updates are immediately available for existing Q4OS users from the regular Q4OS repositories. Q4OS Scorpion LTS release (supported for 5 years) is based on Debian 9 Stretch and it features the Trinity 14.0.5 and KDE Plasma 5.8 LTS desktop environments. It's available for 64-bit and 32-bit (i686-pae) computers as well as i386 systems without PAE extension. ARM 64-bit (arm64) and 32-bit (armhf) ports are provided as well. Q4OS offers its own exclusive utilities and features, specifically the 'Desktop profiler' application for profiling your computer into different professional working tools...." Here is the brief release announcement. Download (MD5, pkglist): q4os-2.6-x64.r1.iso (572MB), q4os-2.6-x64-kde.r1.iso (815MB), q4os-2.6-i686pae.r1.iso (577MB).

Q4OS is a lightweight, Debian-based distribution which features the Trinity desktop (a continuation of the KDE 3 desktop environment). The project's latest release, Q4OS 2.5, introduces several package updates and also makes it possible to install the KDE Plasma 5 desktop alongside Trinity. "A significant update to the Q4OS 2 Scorpion stable LTS is immediately available for download. The new 2.5 series brings an essential change adding KDE Plasma to be an equal option to the Trinity desktop, as Q4OS is now pre-configured for both desktops to coexist alongside each other. System installer configures the system the usual way, but decides afterwards to offer additional installation of the KDE Plasma desktop, if sufficient hardware resources are detected. So a user can login and switch forth and back between lightweight efficient Trinity desktop and more advanced KDE Plasma desktop environment according to his choice. Other changes include PulseAudio with better system integration for easier audio management, Q4OS installer improvements, Firefox 60 and LibreOffice 6 installers, important security and bug fixes as well as cumulative upgrade covering all changes since the previous Q4OS 2 Scorpion stable release." Further details can be found on the project's blog. Download: q4os-2.5-x64.r1.iso (570MB, MD5, pkglist).

Q4OS, a Debian-based distribution featuring the Trinity desktop environment, has launched a new development branch. The project's new testing branch, Q4OS 3.1 Testing, carries the code name "Centaurus" and uses packages from Debian's Testing "Buster" branch. "We introduce the initial development build of the new major Q4OS version 3, codenamed 'Centaurus'. This release is based on Debian 'Buster' and Trinity desktop 14.0.5 development branch. Q4OS Centaurus will be in development until Debian Buster becomes stable, and will be supported at least five years from the official release date. Anybody is invited to try out the brand new version and report bugs and glitches, you can download live CD's for x64 cpu architecture from dedicated Testing releases page. The Q4OS desktop is a powerful and reliable operating system based on proven desktop model, represented by the recent 'Trinity desktop' environment. Q4OS comes with its own exclusive utilities and features, especially with the 'Desktop profiler' for profiling your computer into different professional working tools, 'Setup utility' for the smooth installation of third-party applications...." Further information can be found on the distribution's news page. Download (MD5): q4os-3.1-x64.r1.iso (661MB, pkglist).

Q4OS is a lightweight Linux distribution based on Debian and featuring the Trinity desktop environment. The distribution has released a new stable branch, Q4OS 2.4, based on Debian 9 Stretch. The release announcement states: "We are proud to announce the immediate availability of the brand new stable Q4OS 2.4 version codenamed 'Scorpion'. This is a long-term support LTS release, to be supported for at least five years with security patches and software updates. Q4OS Scorpion is based on Debian Stretch 9.2 and Trinity 14.0.5 desktop environment and it is available for 64-bit and 32-bit/i686 PAE computers, as well as i386 systems without PAE extension. We are working hard to release Q4OS Scorpion editions for 64-bit and 32-bit ARM architectures as soon as possible. Q4OS offers its own exclusive utilities and features, especially the 'Desktop profiler' for profiling your computer into different professional working tools, 'Setup utility' for the smooth installation of third-party applications, a 'Welcome Screen' with several integrated short-cuts to make system configuration easier for novice users, KDE5, Xfce, LXDE, Cinnamon and LXQt alternative environments installation option and many more." Q4OS is available in Live and Install editions. Download (MD5, pkglist): q4os-2.4-x64.r1.iso (606MB), q4os-2.4-x64-instcd.r1.iso (333MB).